Qilu Network Lightning News February 5 News On February 4, the day of lichun, the world-renowned 24th Winter Olympic Games opened in beijing, the world's first "double Olympic city"! The Olympic fire is once again ignited in the "Bird's Nest". In the next 16 days, let's join us in this passionate, poetic and romantic ice and snow covenant!
From bidding to preparation, the Beijing Winter Olympics have always adhered to the principles of green, low-carbon and sustainable, and the practice of "green Olympics" runs through all aspects, helping "green Olympics" to help "made in Shandong".
Green ice making: Carbon dioxide cross-critical direct cold ice making, carbon emissions tend to be close to zero
Walking into the "Ice Ribbon" of the National Speed Skating Hall, you will be greeted by a whole 12,000 square meters of ice surface, which is the largest multi-functional full ice surface in the world using carbon dioxide transcritical direct cold ice technology.
Here, six sets of CO2 transcritical compression equipment provided by Qingdao Haier Carrier Refrigeration Equipment Co., Ltd. are running stably.
"We can keep the ice level within 0.5 degrees Celsius, which allows athletes to perform better, we call faster and better ice." Jiang Dianju, director of the engineering and development department of Qingdao Haier Carrier Refrigeration Equipment Co., Ltd., said in an interview with lightning news reporters.
Green Olympics is one of the core concepts of this Winter Olympic Games, the national speed skating hall new ice surface of 12,000 square meters, a large area of ice, but also to minimize emissions, which gives equipment manufacturers a big problem.
With the accumulation of technology, Haier Carrier has successfully replaced traditional refrigerants such as Freon and ethylene glycol with carbon dioxide, and achieved green upgrades at the source of refrigeration.
The reporter consulted @ China Environment Official Micro learned that carbon dioxide environmentally friendly refrigerants for ice making, the ice surface temperature difference is controlled within 0.5 degrees Celsius, the carbon emission is close to zero, reducing the damage of traditional refrigerants to the ozone layer, and a large amount of high-quality waste heat generated during the refrigeration process can be recycled and reused.
In addition to the core carbon dioxide transcritical compressor unit, Shandong also relies on its own industrial chain advantages to provide supporting technical support for the green ice making of the National Speed Skating Hall.
Among them, Shandong Shenzhou Refrigeration Equipment Co., Ltd., located in Jinan, undertook the manufacturing task of medium-pressure oil return unit, which is the key hub to ensure the operation of the core unit of the system.
Gao Chenchen, chief engineer of Shandong Shenzhou Refrigeration Equipment Co., Ltd., said in an interview with lightning news reporters, "To ensure the continuous stability of the system oil return, in terms of system pressure fluctuations and the stability of the entire oil supply page, the stability is more than 50% higher than the original intermittent method." ”
What makes Shandong people even more proud is that these "Shandong-made" refrigeration equipment have helped "Ice Ribbon" achieve the first of 4 worlds:
The National Speed Skating Hall adopts carbon dioxide transcritical direct cooling system, which is the world's first winter Olympic speed skating venue to adopt carbon dioxide transcritical direct evaporative refrigeration; the design and application of the 14 cubic meter carbon dioxide barrel pump unit adopted by it is the first in the world; the application of centralized medium pressure return oil in the carbon dioxide refrigeration system is the first in the world; and the application of ultra-long stainless steel cold drain pipe in artificial ice rink is the first in the world.
Green traffic: "hydrogen" dances flying, making the ice and snow covenant more "green"
The "green" of this Winter Olympics not only appeared in the venues of the competition area, but also achieved green help in green transportation. To help the green Winter Olympics, Shandong also sent hydrogen fuel buses to the Winter Olympics.
Zhongtong Bus in Liaocheng, Shandong Province, 40 hydrogen fuel buses tailored for the Winter Olympics have successfully entered the Zhangjiakou racing area, and during the event, these vehicles shuttled between various venues and news centers as media vehicles.
All the winning models of Zhongtong adopt the 12-meter new N series hydrogen fuel bus, and the whole process is strictly controlled in the production process.
The vehicle is equipped with a full range of intelligent driver assistance equipment, including ADAS, etc., and the N95 healthy cockpit standard is realized in the car, which can achieve normal start and operation of the vehicle at -35 °C, and the temperature in the car is maintained at 15 °C. Whether it is low temperature resistance, safety performance or comfort, all aspects have been improved.
Green building: prefabricated grandstand system, environmental protection, anti-freeze, earthquake resistance
From bidding to preparation, the Beijing Winter Olympics have always adhered to the principles of green, low-carbon and sustainable, and the practice of "green Olympic Games" runs through all aspects. The "green buildings" at the Beijing Winter Olympics are also not lacking in "Made in Shandong".
The National Alpine Ski Center construction project coach seat platform, grandstand, seat and other facilities, manufactured by Qingyun Leading Wellness, the product is environmentally friendly, anti-freeze, anti-earthquake, windproof, anti-skid.
In October last year, Leading Wellness was tasked with installing grandstand facilities for the National Alpine Ski Centre. For the "leading recreation" who has participated in large-scale events many times, making the grandstand was originally a "housekeeping skill", but this time it is different from the previous construction on flat ground, and the stands should be built on a high mountain.
The minimum daytime temperature at the xiaohaituo mountain construction site can reach minus 15 °C, and the wind force is 7-8 perennial. In the face of harsh climatic conditions, ordinary prefabricated grandstand systems and seats can easily lose their toughness.
Therefore, in addition to the bearing capacity, comfort and other performance of the facility should meet the requirements of the top event, it must also have special properties such as anti-freezing, earthquake resistance, windproof, and anti-slip.
Therefore, before mass production, Qingyun's leading wellness assembly grandstand system and seats have undergone strict material selection, trial production and testing.
In order to ensure the delivery on time, "Leading Wellness" adopted the three synchronous working methods of design, manufacturing and installation, overcome one technical problem after another, and completed the construction and installation of the project within 3 months.
It is worth noting that the prefabricated grandstand system and seats can not only be dismantled and transported in a short period of time after use, restoring the original natural landscape, but also more than 90% of the temporary stands are installed using materials recovered from the Tokyo Olympic Games, helping the Winter Olympics to be more "green".